Please disable /proc/sys/net/ipv4/conf/*/send_redirects > or NETKEY will cause the sending of bogus ICMP redirects!
Run these two as root: # for f in /proc/sys/net/ipv4/conf/*/accept_redirects; do echo 0 > $f; done # for f in /proc/sys/net/ipv4/conf/*/send_redirects; do echo 0 > $f; done
3) Install rng-tools (OPTIONAL)
Install this tool if you face the following error after configuraing the IPsec.
Hardware RNG detected, testing if used properly [FAILED]
Hardware RNG is present but ‘rngd’ is not running.
sudo apt-get install rng-tools